Your message dated Wed, 03 Sep 2025 20:44:47 +0000
with message-id <[email protected]>
and subject line Bug#1017761: fixed in python-jpype 1.6.0-1
has caused the Debian Bug report #1017761,
regarding java.lang.ClassNotFoundException:
org.jpype.classloader.DynamicClassLoader
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
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misconfiguration somewhere. Please contact [email protected]
immediately.)
--
1017761: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1017761
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: python3-jpype
Version: 1.4.0-2
Severity: normal
Due to how the org.jpype.jar is packaged
(https://salsa.debian.org/python-team/packages/python-jpype/-/commit/44a8befe0b856609a4095f5d9e3979752e367ad8),
jpype.startJVM() doesn't work out of the box as documented in upstream
documentation:
$ python3 -c 'import jpype; jpype.startJVM()'
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/usr/lib/python3/dist-packages/jpype/_core.py", line 218, in
startJVM
_jpype.startup(jvmpath, tuple(args),
SystemError: java.lang.ClassNotFoundException:
org.jpype.classloader.DynamicClassLoader
This is because it's expected to be in
/usr/lib/python3/dist-packages/org.jpype.jar
(https://github.com/jpype-project/jpype/blob/24a2b95aefc2a59e7cf2c362a92ee5c6b13eb94f/native/common/jp_classloader.cpp#L74)
and Debian unfortunately only moves the jar, but doesn't patch jpype to
look for it in the new location.
As a workaround, one can explicitly add the jar to classpath:
$ python3 -c 'import jpype;
jpype.startJVM(classpath=["/usr/share/java/org.jpype.jar"])'
Unfortunately, this isn't documented anywhere.
-- System Information:
Debian Release: bookworm/sid
APT prefers stable-security
APT policy: (990, 'stable-security'), (990, 'testing'), (500,
'unstable-debug'), (500, 'testing-debug'), (500, 'stable-debug'), (500,
'unstable'), (500, 'stable'), (1, 'experimental-debug'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 5.18.0-3-amd64 (SMP w/4 CPU threads; PREEMPT)
Kernel taint flags: TAINT_CPU_OUT_OF_SPEC, TAINT_USER, TAINT_WARN
Locale: LANG=cs_CZ.UTF-8, LC_CTYPE=cs_CZ.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages python3-jpype depends on:
ii default-jre 2:1.11-72
ii default-jre-headless [java6-runtime-headless] 2:1.11-72
ii libc6 2.34-3
ii libgcc-s1 12.1.0-8
ii libstdc++6 12.1.0-8
ii openjdk-11-jre-headless [java6-runtime-headless] 11.0.16+8-1
ii python3 3.10.5-3
ii python3-numpy [python3-numpy-abi9] 1:1.21.5-1+b1
python3-jpype recommends no packages.
python3-jpype suggests no packages.
-- no debconf information
--
Tomáš "liskin" ("Pivník") Janoušek, https://lisk.in/
--- End Message ---
--- Begin Message ---
Source: python-jpype
Source-Version: 1.6.0-1
Done: Colin Watson <[email protected]>
We believe that the bug you reported is fixed in the latest version of
python-jpype, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Colin Watson <[email protected]> (supplier of updated python-jpype package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Wed, 03 Sep 2025 20:49:17 +0100
Source: python-jpype
Architecture: source
Version: 1.6.0-1
Distribution: unstable
Urgency: medium
Maintainer: Debian Python Team <[email protected]>
Changed-By: Colin Watson <[email protected]>
Closes: 1017761 1035211
Changes:
python-jpype (1.6.0-1) unstable; urgency=medium
.
* Team upload.
* New upstream release.
* Use dh-sequence-python3 and dh-sequence-javahelper.
* Use pybuild-plugin-pyproject.
* Simplify some debhelper overrides.
* Run most tests during build.
* Look for system-installed org.jpype.jar (closes: #1017761).
* Enable autopkgtest-pkg-pybuild (closes: #1035211).
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